摘要：

文中认为在东濮凹陷中自沙河街组四段沉积中晚期开始，海水随着海面升降，间歇性地进入由北东向的兰聊断裂和长垣断裂构成的古河谷。高位期，海水以相对暂时性抬高的形式，淹没本区，致使凹陷南部成为向东南或南开口的河口湾，构成盐湖沉积的先期沉积环境，到低位期，海水退出凹陷区，部分海水因 受东西向同沉积走滑断裂（高平集—习城集一线）高地的阻隔而潴留，局限在高平集—习城集断层至文明寨—范县断层的同沉积构造凹陷，潴留海水蒸发、浓缩，形成盐类。在较深的凹地，受陆源淡水的影响较小，卤水浓度相对较高，那里依次沉积了具有深水沉积特点的碳酸盐岩、石膏、石盐等；而在水体较浅的凹地，（如砂砰、泥坪环境），那里易受季节性洪水影响，卤水淡化，沉积了具有明显浅水特征的灰质泥岩、泥膏岩等。

Abstract:

 More than sixty beds with nearly one thousand meters in thickness of salts and other evaporites are developed in Shahajie formation (Tertiary) Dongpu Depression. Since the evaporites deposits have close relations to the formation and storage of oil and gas, so its origin have drawn much attention for many researchers in last few years. Suggestions of high mountain-deep basin and thermo brines from deep layer dewelling up along fault are more popular in these considerations. In contrast to the suggestions mentioned above,  model of sea water fed to an estuearine setting episodically caused the evaporite deposits is proposed in this paper.
The saline deposits in Shahejie formation can be classified into 12 units and its precipitated from brine may be started from middle and late periods of Shahejie formation after the sea water invaded to the palaeovalley between Lanliao fault and Chongyue fault when sea level rising.The total 12 units of saline deposits are thought to be precipitated starting from the middle and late sedimentary periods of Shahejie formation. At that time the seawater invaded to the palaeovalley formed by Lanliao fault and Chongyue fault (NE direction) and retentioned by barrier which caused probably by Synstrike-Slip fault of Gaopingji-Xichengji (EW direction). After Sea level dropping the retentioned seawater was concentrated in the deep or shallow settings of the drowned palaeovalley (estuarine) and evaporites precipitate took place.Based on the study of ichnology and sedimentology twelve times of sea level changing probably happened in the sedimentary period of Shahejie formation. It is worth to note here that the 12 units of saline deposits coincidence with times of sea level changing may shouldn't be surprising.